Short answer: yours, and theirs, at the same time.
On a shared mine site, safety duties are held concurrently. The principal or operator holds duties. You, the contracting company sending people and equipment, hold duties for your own team and gear. Where those duties overlap, the law requires the parties to consult, cooperate, and coordinate with each other. Being the subcontractor does not shed the duty. It shares it.
In 2026, this is exactly where enforcement is pointed. Contractor management across complex supply chains is a named priority, and inspectors are looking hard at the interfaces: how information flows between operator and contracting company, how supervision works across the boundary, whether permit and access systems line up. A tidy compliance folder inside your office is not the point. The point is whether the picture holds up where your duty meets theirs.
You cannot coordinate what you cannot see. If your people and equipment compliance is spread across spreadsheets, inboxes, and one person's memory, you cannot hand the principal a clean, current picture, and you cannot answer quickly when they ask who and what is cleared for their site. That slowness reads as risk to a principal who now carries a due diligence obligation of their own.
The contracting companies that make themselves easy to work with are the ones who can produce readiness on demand. Komatsu got there by replacing a brittle, scattered process with one central system, to the point that managers across three regions say induction issues have become rare. That is what a principal wants on the other side of the interface: a contracting company that can show, not promise.
That boundary is the point, and it is why PIAGO sits on both sides of it. GO! Site Ready gives the contracting company one current record of people and equipment readiness per site. GO! Site Approved gives the principal the requirements, the approvals and the evidence at their own gate. Same records, both directions, without a week of chasing in between.
It is built for mining suppliers, and it works across mining, construction, civil, and industrial sites, so it holds up wherever the requirements change by client.
You do not get to hand your duty up the chain. But you can make meeting it the easy part.
